MAXGE MGB Series User manual

Series
MGB
Intelligent circuit breaker series
Technical data
2p single phase / 4p three phase four wire
2P 230V AC / 4P 400V AC
10A、16A、20A、25A、32A 、40A 、
50A 、63A 、80A 、100A、125A
50Hz
10000
6000
C
6KA
4KV
IP20
- 5℃~+40℃
AC2500V 60s
285V 土5V
253V 土5V
150V土5V
195V土5V
20--40S
Connection mode
Rated voltage（Ue）
Rated current（In）
Rated frequency
Mechanical life
Electrical life
Overload & short-circuit protection
Breaking capacity（Icu=Ics）
Rated impluse withstand voltage（Uimp)
Protecting degree
Operation temperature
Dielectric strength
Over-voltage action value
Over-voltage recovery value
Under-voltage action value
Under-voltage recovery value
Over voltage & under voltage recovery time
76
76

77
Intelligent cloud control (GPRS, Ethernet, WIFI) circuit breaker is developed by our company on the basis of the
Technical Specification for External Circuit Breaker (State Grid Corporation of China Q/ GDW11421-2005), Technical
specification for External Low-Voltage Circuit Breaker (China Southern Power Grid), and Technical Specification for
External Circuit Breaker (CQC1121-2016). The product consists of one miniature circuit breaker with short-circuit
overload protection and one small intelligent electric operating mechanism which is equipped with one micropro-
cessor and two modules (GPRS, Internet , WIFI). The command would be sent and the data will be received by
phones, computers and other terminals. GPRS, Ethernet and WIFI would receive the remote controlled command,
control the tripping or closing of the circuit breaker and feed back the status of the circuit breaker.
1. Intelligent circuit breaker
2. Feature
Modular structure with 35mm standard rail installation.
With manual/automatic switch.
The action of switch on/off is fast and reliable, breaking capacity is 6KA.
2P product can be used for single-phase control.
4P product can be used for three-phase control.
Current specifications are available in 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A and 125A.
Basic functions:
The product is equipped with GPRS, WIFI , Ethernet interface, connected with the cloud platform. The phones
and computers could be connected with circuit breaker by cloud platform to send and receive commands.
Overload and short-circuit protection.
Status indication.
Trip retention.
Status feedback.
a
b
c
d
e
3. Installation and testing
Please confirm that the status of electric operation [manual / automatic switch] are in the [automatic] position before
installation. Switch the product on/off with the switch handle twice to confirm that the handle works normally. Finally
place the closing handle in the opening position and switch the GPRS [remote/local switch] in the [remote] position.
Install the product on the 35mm rail, and connect the product according to the wiring diagram,power supply when
finished.
The product would be automatically closed if two indicator lights are constantly on after the product being energized.
The product could be put into operation if there is no failure after it being switched off several times under remote
control.

78
4. Outline dimension & Wiring diagram
5. Common problems and solutions
6. Daily use and maintenance
The product warranty is 24 months. We are responsible for free repair or replacement if the product can’t be used due to
quality issues within the warranty period.
The repair or replacement shall be paid within the warranty period if the product is damaged due to improper usage,
self-modification, usage out of the standard specification requirements, falling down or damage during installation.
IF IT DOESN'T WORK PROPERLY
Please check whether the [manual/automatic switch] is in the [automatic] status.
Please check whether the input power line is properly connected as specified.
Please check whether there are any faults. The switch cannot be switched on if there is overload or short circuit fault.
The switch would be automatically closed after the product being debugged and charged with electricity.
Switch the [manual/automatic switch] to the [manual] position and manually switch it off when the load is being overhauled.
Switch the [manual/automatic switch] to the [automatic] position after the overhaul.
Restore the power after the circuit breaker is being closed manually.
7. Warranty
1818
81
27 18181818
117
27
dimension diagram

Series
MGB
Solar photovoltaic circuit breaker series
Connection mode
Rated voltage(Ue)
Rated current(In)
Rated frequency
Mechanical life
Electrical life
Overload & short-circuit protection
Breaking capacity(Icu=Ics)
Rated impluse withstand voltage(Uimp)
Protection degree
Operation temperature
Dielectric strength
Over-voltage action value
Over-voltage recovery value
Under-voltage action value
Under-voltage recovery value
Over voltage & under voltage recovery time
2p single phase / 4p three phase four wire
2P 230V AC / 4P 400V AC
10A、16A、20A、25A、32A 、40A 、
50A 、63A 、80A 、100A、125A
50Hz
10000
6000
C
6KA
4KV
IP20
- 5℃~+40℃
AC2500V 60s
285V 土5V
253V 土5V
150V土5V
195V土5V
20--40S
Technical data
MGB42-80L MGB52-125L
79

80
The solar photovoltaic circuit breaker with reclosing function could be automatically opened in the case of over-volt-
age and under-voltage, and it could be automatically closed when the normal voltage is restored. At present, there are
several main scenarios: one is a distributed grid-connected system, and another is a system with large grid-connected
scale.
1. Solar photovoltaic circuit breaker
Under manual gear, the product has only overload and short-circuit protection.
Under automatic gear, the product has over and under voltage protection besides overload and short-circuit
protection, and it also has reclosing function when some conditions are satisfied.
2. Feature
Modular structure with 35mm standard rail installation.
With manual/automatic switch.
The action of switch on/off is fast and reliable.
Introduction to automatic gear function:
Over-voltage and under-voltage protection at the power supply terminal
a
The circuit breaker will be switched off when the power supply terminal is over or under voltage. The circuit brekaer will be
switched on when the normal voltage is restored under non-locking state.
Noted: locking ---means that the device will no longer activate the automatic closing function.The device will be switched off for
once if the voltage is abnormal. When the voltage returns to normal, the device will be switched on after 20s, switched off within the
subsequent 5s, switched on within the subsequent 50s, switched off within the subsequent 5s, then it would be locked.
Working status indication of power supply and the device
b
Four status indications:
1 If the indicator single flashes (once in 3s), which indicates that the circuit has the problem of over-voltage.
2 If the indicator double flashes (twice in 3s), which indicates that the circuit has the problem of under-voltage.
3 If the indicator is constantly on, which indicates that the circuit and equipment work properly.
4 If the indicator is off, which indicates that the circuit is in power failure.
locking and manual unlocking when under-voltage & over-voltage is frequently exceeded
c
When the voltage of load is normal, closing by manual (automatic gear), can be removed;
The electricity powered off for half an hour, the voltage of load is normal when the power is on, can be removed; If the voltage of
load is abnormal, even manual intervention, the product will be locked after closing .
3.Installation and testing
Please confirm that the device is in "automatic" and "tripping" status before installation.
Energize the device after installation. Close the circuit breaker, and manually close and trip the circuit breaker again to
check whether the circuit breaker works normally.
Adjust the input power of the device to over-voltage or under-voltage status to check whether the product is normal or
not if possible.

5. Connection diagram
6. Common problems and solutions
7. Daily use and maintenance
81
The product warranty is 24 months. We are responsible for free repair or replacement if the product can’t be used due to
quality issues within the warranty period.
The repair or replacement shall be paid within the warranty period if the product is damaged due to improper usage,
self-modification, usage out of the standard specification requirements, falling down or damage during installation.
4. Outline dimension & Wiring diagram
IF IT DOESN'T WORK PROPERLY
Please check whether the [manual/automatic switch] is in the [automatic] status.
Please check whether the input power line is connected correctly as specified.
Please check whether there are any faults. If the circuit breaker can’t be closed due to overload or short circuit fault,
the device would be automatically closed after debugging and the device being charged with electricity.
Switch the [manual/automatic switch] to the [manual] position and manually switch the circuit breaker off when
the load end is being maintained.
Switch the [manual/automatic switch] to the [automatic] position after the overhaul.
Recover the power after closing the circuit breaker manually.
8. Warranty
MGB42-80L
2P 4P
54
18 18
90
18181818
70
60
49.8
5.5
45
35
2P 4P
81
27 27
95.3
135
27 27 27 27
MGB52-125L
2P 4P2P 4P
MGB52-125LMGB42-80L